1/* SPDX-License-Identifier: GPL-2.0 */
 2
 3#ifndef BTRFS_DIR_ITEM_H
 4#define BTRFS_DIR_ITEM_H
 5
 6#include <linux/crc32c.h>
 7
 8struct fscrypt_str;
 9
10int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir,
11			  const struct fscrypt_str *name);
12int btrfs_insert_dir_item(struct btrfs_trans_handle *trans,
13			  const struct fscrypt_str *name, struct btrfs_inode *dir,
14			  struct btrfs_key *location, u8 type, u64 index);
15struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
16					     struct btrfs_root *root,
17					     struct btrfs_path *path, u64 dir,
18					     const struct fscrypt_str *name, int mod);
19struct btrfs_dir_item *btrfs_lookup_dir_index_item(
20			struct btrfs_trans_handle *trans,
21			struct btrfs_root *root,
22			struct btrfs_path *path, u64 dir,
23			u64 index, const struct fscrypt_str *name, int mod);
24struct btrfs_dir_item *btrfs_search_dir_index_item(struct btrfs_root *root,
25			    struct btrfs_path *path, u64 dirid,
26			    const struct fscrypt_str *name);
27int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
28			      struct btrfs_root *root,
29			      struct btrfs_path *path,
30			      struct btrfs_dir_item *di);
31int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
32			    struct btrfs_root *root,
33			    struct btrfs_path *path, u64 objectid,
34			    const char *name, u16 name_len,
35			    const void *data, u16 data_len);
36struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
37					  struct btrfs_root *root,
38					  struct btrfs_path *path, u64 dir,
39					  const char *name, u16 name_len,
40					  int mod);
41struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info,
42						 struct btrfs_path *path,
43						 const char *name,
44						 int name_len);
45
46static inline u64 btrfs_name_hash(const char *name, int len)
47{
48       return crc32c((u32)~1, name, len);
49}
50
51#endif